TPS25751AS datasheet(6/85 Pages) TI2

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Table 5-2. TPS25751A S Pin Functions

TYPE(1)

RESET

DESCRIPTION

NAME

NO.

ADCIN1

Hi-Z

Configuration Input. Connect to a resistor divider to LDO_3V3.

ADCIN2

Hi-Z

Configuration Input. Connect to a resistor divider to LDO_3V3.

CC1

I/O

Hi-Z

I/O for USB Type-C. Filter noise with recommended capacitor to GND (CCC).

CC2

I/O

Hi-Z

I/O for USB Type-C. Filter noise with recommended capacitor to GND (CCC).

GATE_VSYS

Hi-Z

Connect to the N-ch MOSFET that has source tied to VSYS

GATE_VBUS

Hi-Z

Connect to the N-ch MOSFET that has source tied to VBUS

GND

11, 12, 14

—

Ground. Connect to ground plane.

GPIO0/LD1

GPIO

Hi-Z

General purpose digital I/O. Pin can be connected for liquid detection on

Type-C connector. Tie to ground when pin is unused.

GPIO1

GPIO

Hi-Z

General purpose digital I/O. Tie to ground when pin is unused.

GPIO2/LD2

GPIO

Hi-Z

General purpose digital I/O. Pin can be connected for liquid detection on

Type-C connector. Tie to ground when pin is unused.

GPIO3

GPIO

Hi-Z

General purpose digital I/O. Tie to ground when pin is unused.

GPIO4/USB_P

GPIO

Hi-Z

General purpose digital I/O. Pin can be connected to D+ for BC1.2 support.

Tie to ground when pin is unused.

GPIO5/USB_N

GPIO

Hi-Z

General purpose digital I/O. Pin can be connected to D- for BC1.2 support.

Tie to ground when pin is unused.

GPIO6

GPIO

Hi-Z

General purpose digital I/O. Tie to ground when pin is unused.

GPIO7

GPIO

Hi-Z

General purpose digital I/O. Tie to ground when pin is unused.

I2Ct_SCL

Hi-Z

I2C target serial clock input. Tie to pullup voltage through a resistor. Tie to

ground if unused.

I2Ct_SDA

I/O

Hi-Z

I2C target serial data. Open-drain input/output. Tie to pullup voltage through a

resistor. Tie to ground if unused.

I2Ct_IRQ

Hi-Z

I2C target interrupt. Active low. Connect to external voltage through a pull-up

resistor. Pin can be re-configured to GPIO10. Tie to ground when unused.

I2Cc_SCL

Hi-Z

I2C controller serial clock. Open-drain output. Tie to pullup voltage through a

resistor.

GPIO11

GPIO

Hi-Z

General purpose digital I/O. Tie to ground when pin is unused.

I2Cc_SDA

I/O

Hi-Z

I2C controller serial data. Open-drain input/output. Tie to pullup voltage

through a resistor.

I2Cc_IRQ

Hi-Z

I2C controller interrupt. Active low. Connect to external voltage through a

pull-up resistor. Pin can be re-configured to GPIO12.

LDO_1V5

—

Output of the CORE LDO. Bypass with capacitance CLDO_1V5 to GND. This

pin cannot source current to external circuits.

LDO_3V3

—

Output of supply switched from VIN_3V3 or VBUS LDO. Bypass with

capacitance CLDO_3V3 to GND.

PP5V

28, 29

—

5V system supply to VBUS, supply for CCy pins as VCONN.

VSYS

—

System side high voltage sensing node. High-voltage sinking node in the

system. Used to implement reverse current protection (RCP) for the external

sink path controlled by GATE_VSYS.

VBUS

26, 27

I/O

5V to 20V input. Bypass with capacitance CVBUS to GND.

VIN_3V3

—

Supply for core circuitry and I/O. Bypass with capacitance CVIN_3V3 to GND.

Tie to GND if device is VBUS powered only.

(1)

I = input, O = output, I/O = input and output, GPIO = general purpose digital input and output

TPS25751A

SLVSJG7 – MAY 2026

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